Introduced new plugin: scijava.modules

This plugin provides functionality to wrap SciJava-Modules
as KNIME nodes.
Merge branch 'scijava_nodes' of https://github.com/knime-ip/knip into scijava_nodes

Conflicts:
	org.knime.knip.scijava.module/src/org/knime/knip/scijava/module/SciJavaModuleGateway.java